diff --git a/src/northbridge/intel/i945/bootblock.c b/src/northbridge/intel/i945/bootblock.c
index f4b46282ca..edb9a8d4d0 100644
--- a/src/northbridge/intel/i945/bootblock.c
+++ b/src/northbridge/intel/i945/bootblock.c
@@ -1,9 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <arch/bootblock.h>
+#include <arch/pci_io_cfg.h>
 #include <assert.h>
-#include <device/pci_ops.h>
 #include <types.h>
+
 #include "i945.h"
 
 static uint32_t encode_pciexbar_length(void)
@@ -27,6 +28,6 @@ void bootblock_early_northbridge_init(void)
 	 *
 	 * The PCIEXBAR is assumed to live in the memory mapped IO space under 4GiB.
 	 */
-	const uint32_t reg = CONFIG_MMCONF_BASE_ADDRESS | encode_pciexbar_length() | 1;
-	pci_io_write_config32(HOST_BRIDGE, PCIEXBAR, reg);
+	const uint32_t reg32 = CONFIG_MMCONF_BASE_ADDRESS | encode_pciexbar_length() | 1;
+	pci_io_write_config32(HOST_BRIDGE, PCIEXBAR, reg32);
 }